Bronchogenic carcinoma presenting as solitary sternal metastasis

Bone metastasis in bronchogenic carcinoma usually occurs at axial skeleton-like vertebrae, ribs, etc., Here we report a case of a 60-year-old male presenting to us with a sternal swelling. Fine-needle aspiration cytology of the swelling showed features suggestive of metastatic adenocarcinoma. Contrast-enhanced computed tomography (CECT) of thorax showed a mass in the left lung hilar area measuring 3 × 4 cm along with sternal metastasis. CT-guided trucut biopsy of the lung mass suggested diagnosis of adenocarcinoma of lung. Immunohistochemistry of a histopathological section from the lung mass confirmed the diagnosis of adenocarcinoma of lung. To conclude, it was a case of adenocarcinoma of lung presenting as solitary sternal metastasis. We want to report the case as solitary sternal metastasis without involvement of other bones is rare as a presenting feature of underlying malignancy. To the best of our knowledge, sternal metastasis as a presentation of bronchogenic carcinoma is not reported in the literature.